PHP | xml_parse()函数
xml_parse()函数是PHP中的一个内置函数,用于解析 XML 文档。
句法:
int xml_parse( resource $xml_parser, string $xml_data, bool $is_final )
参数:此函数接受三个参数,如上所述,如下所述:
- $xml_parser:必填参数。它指定要使用的 XML 解析器。
- $xml_data:必填参数。它指定要解析的数据。
- $is_final:可选参数。如果此参数的值设置为 True,则数据是此解析中发送的最后一条数据。
返回值:此函数在成功时返回 True,在失败时返回 False。
笔记:
- 此函数适用于PHP 4.0.0 及更新版本。
- 这些示例可能不适用于在线 IDE。因此,尝试在本地服务器或PHP托管服务器上运行它。
gfg.xml 文件:
XML
user123
firstname lastname
+91-9876543210
I am John Doe. Live in Kolkata, India.
PHP
PHP
USER DATA
";
break;
case "USERNAME":
echo "Username: ";
break;
case "NAME":
echo "Name: ";
break;
case "PHONE":
echo "Phone no: ";
break;
case "DETAIL":
echo "More about user: ";
}
}
// Element handler function named "ending_handler"
function ending_handler($xml_parser, $element_name) {
echo "
";
}
// Character handler function named "char_handler"
function char_handler($xml_parser, $xml_data) {
echo $xml_data;
}
// Setting element handlers
xml_set_element_handler($xml_parser,
"starting_handler", "ending_handler");
// Setting character data handler
xml_set_character_data_handler($xml_parser, "char_handler");
// Opening xml file
$file_pointer = fopen("gfg.xml", "r");
// Reading xml file
while ($xml_data = fread($file_pointer, 4096)) {
xml_parse($xml_parser, $xml_data, feof($file_pointer)) or
// Display error while xml parsing
die (sprintf("XML Error: %s at line %d",
// Error string
xml_error_string(xml_get_error_code($xml_parser)),
// Error line number
xml_get_current_line_number($xml_parser)));
}
// Free xml parser
xml_parser_free($xml_parser);
// Closing file stream
fclose($file_pointer);
?>
方案一:
PHP
输出:
user123
firstname lastname
+91-9876543210
I am John Doe. Live in Kolkata, India.
方案二:
PHP
USER DATA
";
break;
case "USERNAME":
echo "Username: ";
break;
case "NAME":
echo "Name: ";
break;
case "PHONE":
echo "Phone no: ";
break;
case "DETAIL":
echo "More about user: ";
}
}
// Element handler function named "ending_handler"
function ending_handler($xml_parser, $element_name) {
echo "
";
}
// Character handler function named "char_handler"
function char_handler($xml_parser, $xml_data) {
echo $xml_data;
}
// Setting element handlers
xml_set_element_handler($xml_parser,
"starting_handler", "ending_handler");
// Setting character data handler
xml_set_character_data_handler($xml_parser, "char_handler");
// Opening xml file
$file_pointer = fopen("gfg.xml", "r");
// Reading xml file
while ($xml_data = fread($file_pointer, 4096)) {
xml_parse($xml_parser, $xml_data, feof($file_pointer)) or
// Display error while xml parsing
die (sprintf("XML Error: %s at line %d",
// Error string
xml_error_string(xml_get_error_code($xml_parser)),
// Error line number
xml_get_current_line_number($xml_parser)));
}
// Free xml parser
xml_parser_free($xml_parser);
// Closing file stream
fclose($file_pointer);
?>
输出:
USER DATA
Username: user123
Name: firstname lastname
Phone no: +91-9876543210
More about user: I am John Doe. Live in Kolkata, India.
参考: https://www. PHP.net/manual/en/函数.xml 解析。 PHP